Method of dispensing neutralizing solution



March 29, 1960 R. J. STRAIN ET Al. 4

METHOD OF DISPENSING NEUTRALIZING SOLUTION Filed Dec. 30, 1955 IN VEN TORS Application December sasss s narNo. sssgeao zssonse I METHOD on DISPENSING usurmnz NG a SDLUIIQN RohertJ'. Strain, StratEord, and FrankTranner, Norwalk, Cnn., assignors, bymesne assignments, to The Rilling Dermetics Company, Bridgeport, Conn pa: corp ra ion of Connecticut;

a 2 clai s. or. 1321-7) This invention relates, as indicated, to ad'ispenser 'for neutralising;solutions usedin permanent-{waving of a soluti'on under' pressure.= a

"in cold'wavingof hair, it is the..usual practlceto first apply a; mild. reducing solution, such as thioglycolheamd.

hair, and more particularly to a package which dispenses After the hair has been moistenedl withi'cold wave'solution and wound on curlers it r ewet with coldwave solution; andtheh'air protein is reduced to the, proper aa S tes 2,930,384 Q Patented Man 2a, 1969 1 .vention; showing the bottle, broken, away to illustrate a construction in which the tablets are-fastened to the interior: surface of the wall of the 'bottle.

' Referringnow to the. drawings, reference numeral 10.

indicates generally. a dispenser of .the'invention, in the for nxof a container having an opening 12 through a lk .13 provided with external threads 14. The container 'niaybe a bottle, of flexible material, such as polyethylene plastic to reduce the danger if. the bottle shouldbreak. A nozzle 16, having internal threads 17, is adapted'to be removably threaded on the neck 13. A taperedspout 18 on the nozzle has an innerfconduit of gradu lly reduced cross section that terminates .in an du etorifice 1 A.,'rem'ova ble cap 20 new; the spout of the nozzle over the outlet orifice 19. In; use, the cap is kept on condition The coldwave lotion is rinsed from the hair.

The wave imparted to the hair by the reducing some tion is fixedby then treating the hair on the curlers with an oxidizing or-neutralizing-- solutionq The oxidizing solution is allowedto remain on thecurlers during the oxidizing reaction; It is then rinsed off with water and thehai-risunWoundiErOmthe curlers. Inthepast, theneutralizing: stepv has been, accomplished by taking a wad of cotton in the hand, dipping the cotton into an open bowl containing a neutralizing 1 solution, and then applying the solution to the hair by dabbing the wetted .cotton against the mandrel. I The neutralizing step is cumbersome because it s necessary-to replenish the solution by dipping each time in the bowl} It is also inconvenienh'since the solution l L drips .from the wad of cotton and runs down the arm "ofthe operator.

the nozzle until the gas has generated within the. bottle, preventingescapeofits contents, and is. removed when des red o llo he te ts bd s ha a nd r] the g p re nd may be. r p d o st p. st eam a an ime.

4 with he out et or fic 19 T e lter, plate sn y It is common neutralizing practiceto also apply the neutralizer solution from a collapsible tube or'plastic container by squeezing the container and forcingthe contents through ainarrow outlet and dispensing on the curlers containing the hair in a reduced condition, This is fatiguing to the operators arm and hand. his .desirable to eliminate this arm 'wearying chore.

: It is, therefore, an object of this invention to pro-. vide a dispenser'for a-neutralizing solution which may be voided of its c ontents as it is held above the head.

*Itis a further object of the invention to provide a bottle for dispensing neutralizing solution under .gas pressure, in which the gas is generated by a chemical reaction in the bottle. T

It isv a still further object of the invention to prevent the outlet orifice of the dispenser from becoming clogged with solid particles.

It is a yet further object of the invention to. devise a chemical system that will delayja gas producing reaction for a time sutficient to allow the operator to replace the nozzle. Further objects and advantages of this" invention will become evident as the description proceeds and from an examination of the accompanying drawings which illustrate several embodiments offthe invention andv in which similar numerals refer to similar parts throughout the severalviews.

In the drawings: t

Figure 1 is aview inside elevation of the dispenser embodying the invention and a container for tablets,

with the bottle partly broken away to show the solution,

. acidj preferably sodium bicarbonate. theneutrallzer and gas producing compound has a pH'I fitted between the walls of" the condnitaridhas plu ality of holes 2 the diameter of which is less than the'diameter' of the outlet orifice 19. Theplurality of perforations in the filter plate allow the solution to pass but will catch any undissolved particles that would tend to clog or otherwise obstruct the outlet orifice 19. The filter plate with'its small apertures 22 also reduces the pressure upon the contents at the outlet orifice and regulates the rated discharge.

lnfthe bottle is an aqueous solution 30 of a neutralizer for hair, and a compound capable of producing a gas when reacted with an acid.' The neutralizermay be a watersoluble salt, such'as the ammonium, alkali, and.

alkaline earth metal bromates and iodates, with special preferencegiven to sodium bromate. The gas producing compound is a water soluble inorganic salt of carbonic from 7 to about 9.5., An aqueous solution of 10% to 25% by weight of sodium bromate and 1 to 4% by,

weight'of sodium bicarbonate havinga pH of about'8 V has been found to be satisfactory for the'purposes of tablets contain a solid, water soluble organic acid which this invention.

.Ihe bottle is supplied with a container 40, heat sealed at its edges 42, and holding a plurality of tablets 43. The

will react with sodium bicarbonate in the solution in the bottle to produce carbon dioxide gas. Organic compounds which have been found to be satisfactory for this purpose include succinic, itaconic, citric, and tartaric acids,with preference given to tartaric acid.

The size and number of tablets may vary and depend on the size of the neutralizer container and the volume of neutralizer. It has beenfound that ten tablets con ta1ning'0.12 to 0.18 gram of organic acid to be'o'ptimum to dispense 5 fluid ounces of neutralizer from a 5 fluid reaction in the bottle will be delayed for a time sufli- As sh qwn in Figure 3.,the uqzzl'e1lis. provided with a filter plate}; which fits. in. theconduit communicating The solution of cient to permit the operator to place the nozzle on the bottle. In order to generate the gas, the nozzle is removed and the tablets inserted. Because the tablets have a smaller surface area than a powder of equal weight, the reaction is delayed for a number of seconds, and enough time for the operator to replace the nozzle on the bottle with the cap 20 over the outlet orifice 19. The bottle is then shaken, which accelerates the solution of the tablets and the reaction occurs, producing the gas. Cap, 20 is removed and the contents discharged from the bottle by gas under pressure when desired.

After the tablets have been added and the sodium bicarbonate neutralized, the pH of the solution will drop to a range from about 4 to 8. This is desirable since the neutralizer is most effective in an acid or only slightly alkaline solution of about this range.

Alternatively, the solution in the bottle may contain the neutralizer and an acid salt in amounts to maintain the pH within the range from about 4 to 8. The sodium bicarbonate is then added just prior to the neutralizing operation, in order to generate the necessary gas pressure.

In Figure 4 is shown an alternative form of the invention having a bottle somewhat similar to the one previously described. However, the tablets are mounted on the interior surface of the bottle within a container 50 of frangible material, having its edges fastened to the walls of bottle 11. The inner container 50 prevents the liquid solution from contacting the tablets, but can be ruptured by merely squeezing the flexible bottle in the hand. After the inner container 50 is broken, the tablets contact the solution in the bottle to form the gas.

Other modes of applying the principle of the invention may be employed, change being made as regards the details described, provided the features stated in any of the following claims or the equivalent of such be em ployed.

We, therefore, particularly point out and distinctly claim as our invention:

1. A method of neutralizing hair on the human head which previously has been treated with a reducing solution and wound: said method comprising adding a solid water-soluble organic acid to a water solution of a water-soluble alkaline carbonate and of a solid water-soluble oxidizing agent in a closed container having a discharge opening, said solution having a pH between 7 and about 9.5, whereby to engender the release of carbon dioxide so as to build up pressure within the container, and under such pressure of carbon dioxide discharging the solution of said oxidizing agent in a stream from the container through said opening while directing the stream at the wound hair.

2. A method as set forth in claim 1 wherein the solid water-soluble oxidizing agent is selected from the group consisting of ammonium and alkali bromates and iodates.

References Cited in the file of this patent UNITED STATES PATENTS Herring et al. Mar. 9, 1954 

